Imaging Stars with Quantum Error Correction

作     者：Zixin Huang Gavin K. Brennen Yingkai Ouyang 

作者机构：Centre for Engineered Quantum Systems School of Mathematical and Physical Sciences Macquarie University NSW 2109 Australia Department of Electrical and Computer Engineering National University of Singapore Singapore Centre of Quantum Technologies National University of Singapore Singapore 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2022年第129卷第21期

页      面：210502-210502页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Australian Research Council, ARC, (CE 170100009, NRF2021-QEP2-01-P06) Australian Research Council, ARC National University of Singapore, NUS, (R-263-000-E32-133, R-263-000-E32-731) National University of Singapore, NUS National Research Foundation Singapore, NRF Ministry of Education - Singapore, MOE 

主　　题：Imaging & optical processing Optical interferometry Quantum error correction Quantum information architectures & platforms Quantum metrology Quantum sensing 

摘      要：The development of high-resolution, large-baseline optical interferometers would revolutionize astronomical imaging. However, classical techniques are hindered by physical limitations including loss, noise, and the fact that the received light is generally quantum in nature. We show how to overcome these issues using quantum communication techniques. We present a general framework for using quantum error correction codes for protecting and imaging starlight received at distant telescope sites. In our scheme, the quantum state of light is coherently captured into a nonradiative atomic state via stimulated Raman adiabatic passage, which is then imprinted into a quantum error correction code. The code protects the signal during subsequent potentially noisy operations necessary to extract the image parameters. We show that even a small quantum error correction code can offer significant protection against noise. For large codes, we find noise thresholds below which the information can be preserved. Our scheme represents an application for near-term quantum devices that can increase imaging resolution beyond what is feasible using classical techniques.